Haven’t tried iCatcher myself. It has that utilitarian look that usually either means it’s a power user app that can be configured to behave exactly like you want, or it is a hobby project of a single person without UI/UX talent. Going by your comment it’s the former ;-)

I’m lucky Castro fits my workflow (or rather, my podcast workflow came to be by using Castro since forever), and as it looks pretty as well I have no reason to switch apps.